Machine for semitrimming and marking wall paper



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E. G. STAUNTON MACHINE FOR SEMITRIMMING AND MARKING WALL PAPER 2 Sheets-Sheet 1 Filed Sept. 8. 1922 INVENTUR Jan; 11, 1924 3&79363 E. G. STAUN'IDNJ MACHINE FOR SEMITRIMMI'NG AND'MARK'ING WALL PAPER Filed Sept. 8. 1922 2 Sheets-Sheet 2 Patented Jan. 1, 1%24.

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EDMUND G. STAUNTON, F TORONTO, ONTARIO, CANADA.

MACHINE FOR SEMITBIMMING AND IMARKING- WALL PAPER.

Application filed September 8, 1922. Serial No; 587,029.

It has been proposed to partly sever the selvages of wall paper to facilitate the re-] moval of these selvages when the paper is to be hung. y

In one form the paper has been completely cut through at' regular intervals, the selvage remaining connected to the web by uncut portions of small width which readily break without leaving perceptible evidence of their previous existence when the selvage is torn ofi. It has also been proposed to press or cut a groove in the paper from opposite sides, thus producing a line of weakness along which the paper readily tears.

This is very difficult to accomplish commercially. Also in all such semi-trimmed wall paper it is necessary to adopt means for preventing the accidental tearing of the selvages where they appear at the ends of the outside of the roll. In the present invention it is my object to devise eiiicient apparatus which will form a line of weakness between the selvage and the web by producing a groove or out in one side only of the paper; which will operate at a high rate of speed; which will automatically at predetermined intervals stop the semi-trimming operation long enough to produce a sufficient length of untrimmed paper to serve as a protection for the underlying semi-trimmed selvages when the web is cut into lengths and rolled; and which will mark the points at which the untrimmed portions occur in such a manner as to serve as a guide to an operator in cutting the web into lengths.

I attain my objects by means of the constructions hereinafter specifically described and illustrated in the accompanying drawings in which- Fig. 1 is an end elevation of the device shown in position relative to part of the wall paper printing machine;

Fig. 2 a front elevation of the device, partly in section; and p Fig. 3 a plan view.

In the drawings like numerals of reference indicate corresponding parts in the different figures.

Referring particularly to Figs. 1 and 2, A is one of the printing drums of the printing machine and 2 part of the frame of the machine, on which are mounted the end frames 1 of the semi-trimming apparatus.

In these end frames is j ournalled the driving shaft 1 of the semi-trimming mechanism. This drive shaft is driven from the gear wheel 8, which revolves with the drum A, through the medium of the idler gear 7 and the gear 6 fixed to the shaft 4.

On the shaft 4 is secured a roller Two rollers 9 are carried on the shaft 4, but are free to rotate thereon through the medium of the roller bearings 50. The roller 3 serves as a supporting and feeding means for the web of wall paper B, the selvages lying over the rollers 9. These rollers at least must be provided with a circumferential surface of high carbon cast steel or other suitable hard metal. With these rollers 9 co-operate the grooving disks 10 formed of hardened steel or other suitable hard metal. These disks are formed with an edge fine enough to readily groove the paper running over the rollers 9 without cutting completely through it.

The grooving disks 10 are so'supported that they may be spring-pressed towards the rollers 9 so that the pressure on the rollers may be varied either collectivelyor individually. For this purpose I support these grooving rollers in the following manner. The grooving disks are mounted by means of ball bearings 11 (not shown in de tail) on spindles 12 mounted on shanks 13 which are longitudinally slidable in but non-rotatable relative to the ends of the arms 14 connected to the, rock shaft 17. The shanks 13 have nuts 15 threaded on their upper ends and compression coil springs 16 which are rotatable in collars 51 secured to the rock shaft 17 and are threaded through the arms. The rock shaft is actuated to press the grooving disks against the rollers 9 through the medium of the rock arm 21 secured to the rock shaft and having an eye formed in its outer end through which passes the threaded shank 23 connected with a bracket 22 on the end frame. A nut 25 is threaded on the end of the shank and between this nut and the arm on the shank islocated a coil spring 24. It is evident that by adjusting the nut 25 any desired pressure may be applied simultaneously to the grooving disks 10, While the individual pressure of these disks may be varied by adjusting the nuts 15.

For the purpose of automaticallysuspending the operation of the grooving disks 10, Iprovide the following mechanism. A cam 28 is secured to the cam shaft 30 journalled in one of the end frames. This cam 28 is figured to engage and raise a rock arm 26 secured to the rock shaft 17 The cam shaft is driven from the drive shaft 4. For this purpose I secure a worm wheel 31 to the cam shaft 30, which worm wheel meshes with a worm 32 secured to a shaft 34 journalled in a bracket 33 carried on the adjacent end frame 1. This shaft is driven by a variable speed device from the shaft 4 which comprises a friction disk 33 secured to the end oft'he shaft 4 and a friction disk 35 on the shaft 34 arranged to travel radially over the face of the disk 38 in a wellknown manner.

The preferred method of adjustment of the disk 35 is to form a step bearing for the shaft 34 in the screw 36., which is threaded through the lower part of the bracket 33. The shaft 34 must therefore be connected by a feather key with the worm 32, which is mounted between collars 52 formed on the bracket 33 and which form the bearings for the upper end of the shaft 34. The rate of rotation of the cam 28 relative to that of the roller 31 can therefore be adjusted at any time as finely as may be desired. Pro vision is thus made for accurately adjusting the length of the portions of the web which aresemi-trimmed so that the periodical cessation of semi-trimming can be timed to take place after any desired length of the web has been semi-trimmed, and the separate lengths thussemi-trimmed may be varied at any time to produce finished rolls of wall paper containing any desired number of yards.

To adjust the frictional contact between the friction disks 35 and 38 I form a ball thrust bearing 5 between the shaft 4 and the bearing '54. This bearing, it will be noted, is" threaded into an opening formed in the adjacent end frame 1. rotating the bearing '54, the shaft-4- 'may b moved .journalled in the adjacent end frame 1. At

its outer end this arm is provided with a boss 53 throitigh which a stem 46 is adapted to slide in a direction .parallel to the axis of the roller 47. This stem carries a color fount 44 of known type, from which extends a wick 45 adapted to rub over the surface of the web of paper passing over the roller when the fount is suitably lowered. The fount is lowered in synchronism with the raising of the grooving disks 10'by means of a cam 39 secured to the cam shaft 30, which cam engages a rock arm42 secured to the spindle 45 to which the rock arm 43 is secured. The marking can be caused to be effected at a suitable place on the paper by a lateral adjustment of the fount by sliding its stem 46 through the boss 53 and suitably clamping it by means of a set screw.

The mode of operation of the apparatus is as follows: The web of paper B passing 1 from the last printing drum A is carried through the apparatus by the rotation of the roller 3 at the same rate as it passes from the drum. Asit, passes overthe rollers 9 it is grooved by the grooving disks 10, and as these grooving disks as well as the rollers 9 are idle, their surfaces in Contact with the paper are moved by and at the same rate as the travel of the paper. By thus having the grooving members idle, I ensure that there will be no tearing of the paper at such times as the grooving disks are again lowered into contact with the paper after they have been lifted to suspend the semitrimming of .the paper. The semi-trimming operation is suspended at predetermined intervals as ,hereinbefore described and during the times of suspension one selvage of the paper adjacent thereto is marked as hereinbefore described; Y j 7 If the semi-trimming is continuous. "instead of being interrupted at intervals the paper as it comes from the machine may be rolled and cut off on an automatic machine.

When the semi'trimming is intermittent it 7 will usually be necessary to cut off and roll the paper by hand. It will be understood, of course, that the interrupting mechanism and marking mechanism may be employed with means for automatically suspending the operation of said means for a predetermined period at regular predetermined intervals and with means for varying the length of said intervals without varying the periods of suspension.

2. Apparatus for partly trimming the selvages of a web of wall paper provided with means for automatically suspending the operation of said means at regular predetermined intervals and with means for automatically marking the untrimmed parts of the selvages during said periods of suspension.

3. r pparatus for partly trimming the selvages of a web of wall paper provided with means for automatically suspending the operation of said means at regular predetermined intervals, with means for automatically marking'the untrimmed parts of the selvages and with means for varying the timing of the periods of suspension and of marking.

4C. In apparatus for partly trimming the selvages of a web of wall paper alined cylindrical idle rollers over which the margins of the web of paper pass; idle grooving disks co-operating with the rollers; and a driven roller between the idle rollers supporting the web.

5, A semi-trimming device constructed as set forth in claim 4 provided with spring pressure means for the grooving disks; and means for independently varying the pressure on each of said disks.

6. A semi-trimming device constructed as set forth in claim 4: provided with spring pressure means for the grooving disks; means for independently varying the pressure on each of said disks; and means for simultaneously varying the pressure on both disks.

7. A semi-trimming device constructed as set forth in claim 4: provided with adjustable resilient means for applying pressure to the grooving disks and means for laterally adjusting the disks.

8. In apparatus for partly trimming the selvages of a web of wall paper provided with means for automatically suspending the operation of said means at'regular predetermined intervals means for suspending the operation thereof comprising grooving disks; rock arms carrying the grooving disks; a rock shaft to which said rock arms are connected; a rock arm on said shaft; a cam shaft; a cam on said shaft adapted to engage the last mentioned rock arm; a drive shaft geared to the cam shaft; idle rollers on the drive shaft with which the grooving disks co-operate; and a roller between the idle rollers secured to the drive shaft.

9. Apparatus for semi-trimming wall paper constructed as set forth in claim 8 in which the gearing between the two shafts include variable-speed gearing.

10. Apparatus for partly trimming the selvages of a web of wall paper provided with means for automatically suspending the operation of said means at regular predetermined intervals; means for automatically marking the untrimmed parts of the selvages comprising a roller over which the paper passes; a color fount; a marker fed by said fount and adapted to contact with paper passing over the roller; a rock arm carrying said fount and marker; a cam adapted to actuate said rock arm; a shaft to which said cam is secured; a feed roller for the paper; a shaft to which said roller is secured; and gearing between the two shafts, said cam shaft forming part of the means for suspending the operation of the semi-trimming apparatus.

Signed at Toronto, Can, this 31st day of August, 1922.

EDMUND G. STAUNTON. 

